Colorful Sensory Tiles: Bright cosmic liquid colors change that move with every step, jump, dance, or hop ;keep the mind active, prevent getting bored and help to concentrate. Includes 4 pieces of Liquid Motion Floor Tiles, size of each tile is 11.8" x 11.8", easy to clean and disinfect,safety and health. No installation required: it could be placed around in any corner of the house, school,nursery, babies room or good choice in decorative. Anti slip backing: the foamy non slip layer provides cushioning and traction to keep from slipping. quite sturdy and durable which can support the weight of the adults Fun Sensory Activities: Line them up and run across or hop from one to another, playing games, jumping, or dancing around.